@article{10_1155_AAA_2005_581,
     author = {Berkovits J. and Fabry C.},
     title = {An extension of the topological degree in {Hilbert} space.},
     journal = {Abstract and Applied Analysis},
     pages = {581-597},
     publisher = {mathdoc},
     volume = {2005},
     number = {6},
     year = {2005},
     doi = {10.1155/AAA.2005.581},
     zbl = {1117.47048},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/articles/10.1155/AAA.2005.581/}
}